The compression chamber is off and the valve looks good. Joe has lifted the rubber to expose the holes which allow the water to flow into the cylinder thus compressing the air to send the water up the tube.
This display measures the pressure in bar of the water going up the pipe. We are measuring 4 bar. Very good. !
This is a "shot" of the Ram Pump reservoir showing a good overflow.
This picture shows the mid stroke and the complete sealing of the valve. Good work Joe. Joe built the pump on the island of Jersey, off the coast of England.